I would say the trick is not to take him out of the crib and rock him. It can be so hard especially when they are older, standing, and reaching their arms out to you. But since he has made a habit out of waking up at 5am, you have to help him break it. Try to make yourself not go in his room for at least 3 days in a row at 5am when he wakes. He's going to fuss and its going to be really hard to listen too, but he will break the habit. It can take up to 5 days, but I think 3 days will probably do the trick. Just remember, no feeding and no picking him up!!! Let me know how it goes. Good luck and remember, you CAN do it!!

How do you sleep train once they start standing in the crib?! My 8 month old is still waking up twice a night and I've been rocking him back to sleep each time.